### What?
This PR aims to deflake the indexed fields e2e test in
`test/fields/collections/Indexed/e2e.spec.ts`.
The issue is that this test is setup in a way where sometimes two toasts
will present themselves in the ui. The second toast assertion will fail
with a strict mode violation as the toast locator will resolve to two
elements.
### Why?
To prevent this test from flaking in ci.
### How?
Adding a new `dismissAfterAssertion` flag to the `assertToastErrors`
helper function which dismisses the toasts. This way, the toasts will
not raise the aforementioned error as they will be dismissed from the
ui.
The logic is handled in a separate loop through such that the assertions
occur first. This is done so that dismissing a toast does not surface
errors due to the order of toasts being shown changing.
70b9cab393